A3 20vt quattro smoky idle

Hi guys i have a a3 running revo stage 2.5 and have recently fitted a decat pipe and since doing this it smokes quite bad on idle not blue smoke/oil just smells normal. any ideas wat can be causing this thanks

Did you have the post cat lambda sensor turned off?
If you didnt that may be the problem. Failing that i would get the car logged and checked with vag com.
A cat will hide a few things... worn engine parts being one of them.

Noggy Blue 2001 S3 RIP :-(
Family car... 2001 RS4.

I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

Charge pipes have small amounts of oil, turbo was rebuild only 12k ago but it does have a hard life so maybe it time for second rebuild, or hybrid time if it still smokes be stem seals I guess, thanks for replys.

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